Sure thing, let's get straight to it. We start with 189 and we're going to multiply it by 25, which means adding 189 to itself 25 times.
Step 1: 0 + 189 = 189
Step 2: 189 + 189 = 378
Step 3: 378 + 189 = 567
Step 4: 567 + 189 = 756
Step 5: 756 + 189 = 945
Step 6: 945 + 189 = 1134
Step 7: 1134 + 189 = 1323
Step 8: 1323 + 189 = 1512
Step 9: 1512 + 189 = 1701
Step 10: 1701 + 189 = 1890
Step 11: 1890 + 189 = 2079
Step 12: 2079 + 189 = 2268
Step 13: 2268 + 189 = 2457
Step 14: 2457 + 189 = 2646
Step 15: 2646 + 189 = 2835
Step 16: 2835 + 189 = 3024
Step 17: 3024 + 189 = 3213
Step 18: 3213 + 189 = 3402
Step 19: 3402 + 189 = 3591
Step 20: 3591 + 189 = 3780
Step 21: 3780 + 189 = 3969
Step 22: 3969 + 189 = 4158
Step 23: 4158 + 189 = 4347
Step 24: 4347 + 189 = 4536
Step 25: 4536 + 189 = 4725

So, 189*25 = 4725